Development was well underway on Apple’s next operating systems, including macOS 15 and iOS 18, before grinding to a halt for a one-week pause. The rare break from ongoing development was first reported by Bloomberg’s Mark Gurman, who said the pause was announced to Apple employees internally last week. The shutdown was reportedly initiated by Craig Federighi, who is Apple’s senior vice president of software engineering. Gurman says that members of Apple’s senior management teams discovered a high number of bugs in its current operating systems, which lead to the break.